Use classical fourth-order Runge-Kutta Method with $\displaystyle h = 0.2$ to approximate the solution to the initial value problem: $\displaystyle y' = -20y$ $\displaystyle y(1) = 3$ at $\displaystyle x = 1, 1.2, 1.4$
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If you know what the "fourth order Runge-Kutta" method is, this should be just an arithmetic problem. What have you done on it?
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